The Challenge Rayleigh scattering of sunlight in Earth’s atmosphere causes diffuse sky radiation, which is the reason for the blue color of the daytime and twilightsky, as well as the yellowish to reddish hue of the low Sun. https://en.wikipedia.org/wiki/Rayleigh_scattering

Wisteria is a genus of flowering plants in the legume family, Fabaceae (Leguminosae), that includes ten species of woody climbing bines that are native to China, Korea, Japan, and the Eastern United States. Some species are popular ornamental plants. An aquatic flowering plant with the common name wisteria or 'water wisteria' is in fact Hygrophila difformis, in the family Acanthaceae.
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